Under Armour Women's UA Speedform Amp Black/Verve Violet/Black Sneaker 10 B (M) Synthetic Imported Speedform - Precision fit and no distractions. External TPU heel counter - For locked-in support. Silicone taping - Grip and durability. Moulded toe cap - Added support and durability. Charged Cushioning sockliner - For ultimate comfort and fit.